:root{--paper:#f6f7fb;--card:#ffffff;--ink:#17223a;--muted:#5b6580;--line:#dde2ec;--accent:#2f5bd3;--accent-ink:#ffffff;--hl:#ffe27a;--me:#2f5bd3;--rachel:#c2410c;--maria:#0f766e;--weak:#c2410c;--improving:#b45309;--secure:#15803d;--tutor-bg:#eef1f8;--display:"Bricolage Grotesque","Segoe UI",system-ui,sans-serif;--body:"Atkinson Hyperlegible","Segoe UI",system-ui,sans-serif;color-scheme:light}@media (prefers-color-scheme:dark){:root{--paper:#10141d;--card:#182030;--ink:#e7ebf5;--muted:#9ba5be;--line:#2b3448;--accent:#7d9cff;--accent-ink:#0e1424;--hl:#8a6f12;--rachel:#fb923c;--maria:#2dd4bf;--weak:#fb923c;--improving:#fbbf24;--secure:#4ade80;--tutor-bg:#1e2738;color-scheme:dark}}.theme-rachel{--me:var(--rachel)}.theme-maria{--me:var(--maria)}*{box-sizing:border-box}body,html{margin:0}body{background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.5;-webkit-text-size-adjust:100%}a{color:var(--accent)}h1,h2,h3{font-family:var(--display);line-height:1.15;margin:0;text-wrap:balance}h1{font-size:1.9rem}h2{font-size:1.25rem}h3{font-size:1.05rem}p{margin:0}.page{max-width:760px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));padding-block:calc(20px + env(safe-area-inset-top, 0px)) calc(48px + env(safe-area-inset-bottom, 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.title{display:grid;min-width:0}.chat-head .title strong{font-family:var(--display);font-size:1.05rem}.chat-head .title span{color:var(--muted);font-size:.85rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-log{overflow-y:auto;padding:16px max(16px,env(safe-area-inset-right,0px)) 16px max(16px,env(safe-area-inset-left,0px));display:flex;flex-direction:column;gap:12px}.bubble{max-width:88%;padding:10px 14px;border-radius:14px;overflow-wrap:anywhere;min-width:0}.bubble.tutor{background:var(--tutor-bg);align-self:flex-start;border-bottom-left-radius:4px}.bubble.me{background:var(--me);color:#fff;align-self:flex-end;border-bottom-right-radius:4px;white-space:pre-wrap}.bubble ol,.bubble p+p,.bubble ul{margin-top:8px}.bubble ol,.bubble ul{padding-left:20px;margin-bottom:0}.bubble pre{overflow-x:auto;background:var(--card);padding:8px;border-radius:6px}.bubble table{border-collapse:collapse;display:block;overflow-x:auto}.bubble td,.bubble th{border:1px solid var(--line);padding:4px 8px}.thinking{color:var(--muted);font-style:italic}.composer{display:flex;gap:8px;align-items:flex-end;border-top:1px solid var(--line);background:var(--paper);padding:10px max(16px,env(safe-area-inset-right,0px)) calc(10px + env(safe-area-inset-bottom, 0px)) max(16px,env(safe-area-inset-left,0px))}.composer textarea{min-height:44px;max-height:40vh;resize:none}.composer .btn{justify-self:auto}.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));grid-gap:16px;gap:16px}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));grid-gap:10px;gap:10px}.stat{display:grid;grid-gap:2px;gap:2px}.stat b{font-family:var(--display);font-size:1.5rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.stat span{color:var(--muted);font-size:.82rem}.who{font-weight:700;color:var(--me)}.bars{display:flex;align-items:flex-end;gap:3px;height:48px}.bars i{flex:1 1;background:var(--me);border-radius:2px 2px 0 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.card{width:100%;max-width:380px}@media (prefers-reduced-motion:no-preference){.bubble{animation:rise .2s ease-out}@keyframes rise{0%{transform:translateY(4px);opacity:.6}to{transform:none;opacity:1}}}.reset summary{cursor:pointer}.reset form{margin-top:8px}